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Oracle 1z0-068 Oracle Database 12c: RAC and Grid Infrastructure Administration Exam Practice Test

Demo: 22 questions
Total 152 questions

Oracle Database 12c: RAC and Grid Infrastructure Administration Questions and Answers

Question 1

When installing Oracle Grid Infrastructure 12c, which three options exist for the configuration of Grid naming Service (GNS)?

Options:

A.

using Shared GNS for the leaf nodes and local GNS for the hub nodes in a Flex Cluster

B.

using Shared GNS running on another cluster

C.

using Shared GNS for the hub nodes and local GNS for the leaf nodes in a Flex Cluster

D.

creation of a new GNS for this cluster

E.

using DHCP to assign Node Virtual IP addresses for nodes in the cluster

Question 2

Which three statements are true about displaying the location of voting files, OCR files, or OLR files in Oracle Clusterware 12c on a UNIX system?

Options:

A.

Use cat /etc/oracle/ocr.loc to view the location of the OCR if stored in ASM.

B.

Use ocrcheck command to view the location of the OCR only if stored in a file system.

C.

Use crsctl querry css votedisk to view the location of voting files if stored in ASM.

D.

Use the ls command in the asmcmd utility to view the location of voting files if stored in ASM.

E.

Use crsctl query css votedisk to view the location of voting files if stored in a file system.

F.

Use cat /etc/oracle/olr.loc to view the location of the OCR and OLR if stored on a file system.

Question 3

Which three statements are true about ASM Cloud File System (ACFS) auditing?

Options:

A.

Audit information gathered by each cluster node can be consolidated into the unified ACFS audit trail.

B.

acfsutil audit archive must be used to archive audit files that are larger than 10MB.

C.

acfsutil audit init must be run by a system administrator.

D.

acfsutil audit purge can be run by an audit manager.

E.

acfsutil audit read marks audit files to indicate that it is safe to purge them.

Question 4

Identify three prerequisites for the successful installation of Oracle Grid Infrastructure 12c for a standard cluster when using Full Featured Grid Naming Service (GNS).

Options:

A.

You must create a Grid Management Repository database.

B.

You must enable the Name Server Cache Daemon (NSCD).

C.

A DHCP service on the private network for the cluster is required to allocate virtual IP addresses for HAIP.

D.

Each cluster node must have at least two network interface cards,

E.

DNS must be configured to delegate name resolution for the cluster subdomain to the cluster.

F.

A DHCP service on the public network for the cluster is required to allocate virtual IP addresses as required by the cluster.

Question 5

Which three are among the minimum components in a software image that is part of a Grid Plug and Play (GPnP) profile in Oracle Clusterware? (Choose three.)

Options:

A.

an operating system version

B.

a version of Oracle database server used in Real Application Cluster (RAC) databases

C.

software required to configure nodes at startup

D.

the GPnP software

E.

a file system version used for the software to be installed

F.

a version of Automatic Storage Management (ASM) used for the cluster

Question 6

Examine this tnsnames entry from a RAC configuration using a SCAN listener:

HR=(DESCRIPTION=

(LOAD_BALANCE =on)

(ADDRESS=(PROTOCOL=TCP)(HOST=cluster01-scan)(PORT=1521))

(CONNECT_DATA=(SERVICE_NAME=HRSRV)))

Which two statements are true about clients using this entry to connect? (Choose two.)

Options:

A.

The host name in the tnsnames entry must be changed if nodes are added or removed from the Cluster.

B.

Clients using EZConnect can benefit from connect time load balancing because the tnsnames entry refers to a SCAN listener.

C.

Client connection requests are automatically balanced across all IP addresses defined for the SCAN.

D.

A client connection request is received by a SCAN listener that creates the connection to the least-loaded database instance.

E.

Client connection requests are automatically failed over to another SCAN listener if the chosen SCAN listener is not available.

Question 7

Which two statements are true about the Global Enqueue Service, Instance Locks, and global enqueues in Oracle 12c RAC?

Options:

A.

In a RAC One Node database, there is no LMD0 process if only one instance is running.

B.

Global Enqueues and Instance Locks replace mutexes completely in RAC database instances.

C.

In a RAC database, there is no LMD0 process if only one instance is running.

D.

Global Enqueues and Instance Locks replace latches completely in RAC database instances.

E.

Global Enqueues may have owners and waiters in the same instance.

F.

Global Enqueues may have converters and waiters in the same instance.

Question 8

Which four statements are true concerning the upgrading of Oracle Grid Infrastructure 12c?

Options:

A.

The ORACLE_HOME environment variable must be set to the Grid Infrastructure home directory in the installation owner’s environment.

B.

The upgrade must be done in-place.

C.

The upgrade must be done out of place.

D.

Upgrade validation may be done using the Oracle Universal Installer which in turn invokes the built-in cluster verification utility.

E.

The cluster verification utility cluvfy.sh can verify that the cluster is ready for an upgrade.

F.

The ORACLE_SID environment variable must be set to the SID of the ASM instance in the installation owner’s environment.

G.

The cluster verification utility cluvfy.sh can generate fixup scripts to run on all nodes of the cluster.

Question 9

Which two types of IP addresses does Oracle Clusterware 12c acquire from DHCP when it started up on a cluster node using Grid Naming Service (GNS)? (Choose two.)

Options:

A.

Single Client Access Name (SCAN) virtual IP addresses (VIPs)

B.

Grid Naming Service (GNS) VIPs

C.

ASM Listener VIPs

D.

High Available IP (HAIP) addresses uses for the cluster interconnect

E.

Intelligent Platform Management Interface (IPMI) IP addresses

Question 10

Which two statements are true about vsam views in a clustered environment

?

Options:

A.

They exist both in ASM and RDBMS instances, and display the same output.

B.

Their names can be seen in dict when connected to an ASM instance.

C.

Their names can be seen in vfixed_table when connected to an instance of any type that is started.

D.

They exist in both in ASM and RDBSM instances, but they can display different outputs depending on the instance type.

E.

gvasm_attribute can be used to display the ASM_POWER_LIMIT attribute of all ASM instances in the cluster.

Question 11

Which two statements are true about resource profiles for administrator-managed RAC database services? (Choose two.)

Options:

A.

It is automatically created when a service is created using SRVCTL ADD SERVICE.

B.

It contains a list of server pools on which the instances hosting the service can run.

C.

It contains a node list and instance-to-node mapping information for the service.

D.

It specifies the instance to which the service should fail over, if the preferred instance shuts down or fails.

E.

It is automatically created when a service is created using DBMS_SERVICE.CREATE_SERVICE.

Question 12

You are installing Oracle Grid Infrastructure 12c and configuring a Flex Cluster?

Which two elements are required to support this configuration? (Choose two.)

Options:

A.

a Grid Management Repository database

B.

a network interface for ASM and private interconnect traffic

C.

a network interface for private interconnect only

D.

a network interface for the public network

E.

a Grid Management Cluster Health Management (CHM) application server

Question 13

Which three options have a RAC-specific tuning component?

Options:

A.

contention on index leaf blocks

B.

sequence definitions

C.

the size of the online redo log buffers

D.

contention for online redo log files

E.

contention for archived redo log files

F.

the load on the Cluster Interconnect

Question 14

Which three statements are true about ASM Cloud File System (ACFS) tagging?

Options:

A.

acfssettag is a command provided by a platform-independent API to tag files.

B.

acfssettag is a command provided by a platform-dependent API to tag files.

C.

ACFS tagging is used to mark a subset of files in an ACFS file system for replication.

D.

acfsutil encr on can be used to specify the tag names of the files to be encrypted.

E.

acfsutil tag set can be used to tag files.

Question 15

Examine this command executed on the first node of a three-node cluster:

# /OPatch/opatchauto apply 18139660

Which two tasks does this command perform?

Options:

A.

It applies a patch to the Grid Infrastructure only on the first cluster node.

B.

It applies a patch to the Grid Infrastructure on all cluster nodes.

C.

It applies a patch to all database ORACLE_HOMEs, with the same release as the Grid Infrastructure, only on the first cluster node.

D.

It applies a patch to all database ORACLE_HOMEs, with the same release as the Grid Infrastructure, on all cluster nodes.

E.

It applies a patch to all database ORACLE_HOMEs of any version on the first cluster node.

F.

It applies a patch to all database ORACLE_HOMEs of any version on all cluster nodes.

Question 16

Examine this command executed on the first node of a four-node cluster:

$ /0Patch/opatch apply 18031528

What does this command do?

Options:

A.

It applies a patch to one ORACLE_HOME only on the first cluster node.

B.

It applies a patch to all database ORACLE_HOMEs with the same release only on the first cluster node.

C.

It applies a patch to one database ORACLE_HOME on all cluster nodes.

D.

It applies a patch to all database ORACLE_HOMEs with the same release on all cluster nodes.

E.

It applies a patch to all database ORACLE_HOMEs with the same release on the first cluster node.

Question 17

Examine the output of the asmcmd and srvct1 commands:

Then you execute this command:

$ srvctl relocate asm – currentnode host03 –targetnode host02

Which three statements are true regarding the execution of this command based on the output shown?

Options:

A.

It fails because an ASM instance is not configured to run on HOST02.

B.

It succeeds and starts an ASM instance on HOST02 and shuts down the ASM instance on HOST03.

C.

It succeeds and 12c database instances connected to the ASM instance on HOST03 can be reconnected to the ASM instance on HOST02.

D.

It fails because the ASM instance has not been shut down first on HOST03.

E.

It succeeds and starts an ASM instance on HOST02 but the ASM instance on HOST03 is not shut down until all connected clients disconnected.

F.

It succeeds and 12c database instances connected to the ASM instance on HOST03 can be reconnected to the ASM instance on HOST01.

Question 18

You plan to apply a patchset to a RAC database running on a two-node cluster.

The cluster has this configuration:

  • Grid infrastructure release 12.1.0.1.0
  • RAC database release 12.1.0.1.0
  • All software installed on local file systems
  • The database is deployed on ASM disk groups.

Examine this list of possible tasks (see exhibit).

Exhibit:

Identify the required tasks in the correct order to apply the patchset with the least amount of down time.

Options:

A.

1, 3, 2, 5 and 8

B.

3, 2, 5 and 8

C.

1, 2, 3, 5 and 8

D.

3, 2, 6 and 8

E.

3, 2, 5, 2 and 8

Question 19

You administer a RAC database that currently runs on a four-node cluster but which has three instances.

Which two statements are always true about redo logs for this RAC database? (Choose two.)

Options:

A.

A thread of redo must be created before starting a fourth instance if a thread is not already available.

B.

A thread of redo must contain at least two log groups before it can be enabled.

C.

A redo log group added using ALTER DATABASE ADD LOGFILE without the INSTANCE clause is added to each instance.

D.

All the instances must have the same number of redo log groups and each group must have the same number of redo log members.

E.

A thread of redo is automatically dropped when an instance is removed from a RAC database by using SRVCTL.

Question 20

Oracle Clusterware manages an administrator-managed database service defined with the MANUAL management policy.

Which two statements are true?

Options:

A.

The service must be manually restarted with SRVCTL every time the instance hosting the service fails.

B.

Clusterware will monitor the service while it is active.

C.

The service must be manually restarted with SRVCTL after restarting the Clusterware stack on the node hosting the service.

D.

When manually started, the service will always start on one or more available instances rather than on their preferred instances.

E.

The service must be manually started with SRVCTL after a planned restart of the instance hosting the service.

Question 21

When using Oracle 12 Clusterware, which two actions are required to repair the ocr.loc file on host01 in a cluster having three other nodes called host02, host03, and host04?

Options:

A.

Run ocrconfig –repair on another node in the cluster to repair the ocr.loc file on host01

B.

Stop the clusterware stack on host01 only.

C.

Stop the clusterware stack on all cluster nodes.

D.

Run ocrconfig –repair on host01.

E.

Stop the clusterware stack on host01 and on the node used to issue the ocrconfig –repair command.

Question 22

Which two statements are true about resources defined by an administrator and registered with Oracle 12c Clusterware for high availability?

Options:

A.

A policy-managed resource can be started manually using crsctl.

B.

A policy-managed resource can be started manually using srvctl.

C.

Resource dependencies are automatically set when using a policy-managed resource.

D.

An administrator-managed resource can be started manually using crsctl.

E.

An administrator-managed resource can be started manually using srvctl.

F.

The action script is automatically set when using a policy-managed resource.

Demo: 22 questions
Total 152 questions